I take it back. It is possible for me to disagree more strongly.
You don’t need to abstract away page size. Abstraction isn’t the solution to all problems. You just have to expose it. Devs shouldn’t assume page size. They simply need to be able query whether it’s 4 or 16 or 64 or however large and voila.
That exists via sysconf(_SC_PAGESIZE). The problem is that hard coding the page size to 4k has worked just fine for much of the software written in the last few decades, which means that the 4k size has ossified to some extent (Hyrum’s Law).
I take it back. It is possible for me to disagree more strongly.
You don’t need to abstract away page size. Abstraction isn’t the solution to all problems. You just have to expose it. Devs shouldn’t assume page size. They simply need to be able query whether it’s 4 or 16 or 64 or however large and voila.